Blender 2.8 bevel with radius size
Here I have couple objects with different scale, that share the same object data. It seems that objects are different, but whey are the same, and bevel operation proceeds on the objects same way, in object scale coordinates.

But what if I want to do an operation at world scale?
In the case, I shall apply the scale Ctrl+A -&gt; Scale, so that it will not affect the coordinates.